php-src/Zend
2011-09-12 10:13:54 +00:00
..
RFCs
tests Merge missing test from 5_4 2011-09-12 10:13:54 +00:00
acinclude.m4 - Added Bison 2.5 to bison_version_list 2011-06-12 17:26:45 +00:00
bench.php Added caches to eliminate repeatable run-time bindings of functions, classes, constants, methods and properties 2010-05-24 14:11:39 +00:00
build.mk Get rid of autoconf warnings 2011-05-16 00:14:47 +00:00
buildconf
ChangeLog ChangeLog update 2005-08-06 05:37:51 +00:00
configure.in Get rid of autoconf warnings 2011-05-16 00:14:47 +00:00
header Year++ 2010-01-11 03:01:19 +00:00
LICENSE - More -> 2006 changes 2006-01-05 02:34:02 +00:00
Makefile.am Zend Signal Handling (see RFC: https://wiki.php.net/rfc/zendsignals) 2011-06-02 21:16:50 +00:00
Makefile.frag - Fix dependency 2005-01-25 10:39:49 +00:00
micro_bench.php Simplified string offset reading 2010-07-16 11:44:30 +00:00
OBJECTS2_HOWTO - modifyable -> modifiable 2004-04-12 12:22:26 +00:00
README.ZEND_MM - Document the new ZEND_DONT_UNLOAD_MODULES environment variable. 2011-08-08 07:42:58 +00:00
README.ZEND_VM Nuked DOS EOLs 2005-08-03 13:29:00 +00:00
zend_alloc.c Missing ifdef related to the previous patch 2011-06-02 21:38:54 +00:00
zend_alloc.h - Year++ 2011-01-01 02:17:06 +00:00
zend_API.c Revert r316345 which fixes all the tests again 2011-09-07 13:50:18 +00:00
zend_API.h - Added new macro to be used in the end of zend_function_entry declaration (Gwynne) 2011-07-25 11:30:53 +00:00
zend_build.h - Year++ 2011-01-01 02:17:06 +00:00
zend_builtin_functions.c Fix typo 2011-08-08 14:52:34 +00:00
zend_builtin_functions.h Add optional argument to debug_backtrace() and debug_print_backtrace() to limit the amount of stack frames returned. 2011-04-09 09:52:24 +00:00
ZEND_CHANGES Add some information about array overloading 2004-08-30 18:48:52 +00:00
zend_closures.c Commit Gustavo's closure rebinding patch as desided by vote 2011-09-07 06:46:27 +00:00
zend_closures.h - Year++ 2011-01-01 02:17:06 +00:00
zend_compile.c - WS 2011-09-06 06:32:00 +00:00
zend_compile.h - Added zend_is_auto_global_quick function 2011-07-10 15:03:38 +00:00
zend_config.nw.h - Year++ 2011-01-01 02:17:06 +00:00
zend_config.w32.h - Year++ 2011-01-01 02:17:06 +00:00
zend_constants.c - Minor optimization taking the computed hash of interned strings 2011-07-10 12:37:42 +00:00
zend_constants.h - Year++ 2011-01-01 02:17:06 +00:00
zend_default_classes.c - Year++ 2011-01-01 02:17:06 +00:00
zend_dtrace.c Add DTrace probes 2010-04-24 13:32:30 +00:00
zend_dtrace.d Add DTrace probes 2010-04-24 13:32:30 +00:00
zend_dtrace.h Add DTrace probes 2010-04-24 13:32:30 +00:00
zend_dynamic_array.c - Year++ 2011-01-01 02:17:06 +00:00
zend_dynamic_array.h - Year++ 2011-01-01 02:17:06 +00:00
zend_errors.h Change E_ALL to include E_STRICT 2011-07-23 22:07:22 +00:00
zend_exceptions.c - WS 2011-09-06 06:32:42 +00:00
zend_exceptions.h - Year++ 2011-01-01 02:17:06 +00:00
zend_execute_API.c - fix build when no zend signal support 2011-09-08 09:17:21 +00:00
zend_execute.c - Fixed ZTS build 2011-08-16 12:01:36 +00:00
zend_execute.h - Year++ 2011-01-01 02:17:06 +00:00
zend_extensions.c - Year++ 2011-01-01 02:17:06 +00:00
zend_extensions.h - Year++ 2011-01-01 02:17:06 +00:00
zend_float.c - should not have been applied 2011-07-22 11:42:15 +00:00
zend_float.h - Year++ 2011-01-01 02:17:06 +00:00
zend_gc.c - Fixed ZTS build 2011-04-17 22:06:27 +00:00
zend_gc.h - Year++ 2011-01-01 02:17:06 +00:00
zend_globals_macros.h - Year++ 2011-01-01 02:17:06 +00:00
zend_globals.h - Improved parse error messages 2011-06-23 23:00:53 +00:00
zend_hash.c - WS 2011-09-06 06:34:36 +00:00
zend_hash.h - Year++ 2011-01-01 02:17:06 +00:00
zend_highlight.c - Year++ 2011-01-01 02:17:06 +00:00
zend_highlight.h - Year++ 2011-01-01 02:17:06 +00:00
zend_indent.c - Year++ 2011-01-01 02:17:06 +00:00
zend_indent.h - Year++ 2011-01-01 02:17:06 +00:00
zend_ini_parser.y - Year++ 2011-01-01 02:17:06 +00:00
zend_ini_scanner_defs.h - remove magic quotes support, functions are kept (see the NEWS entry for the details) for BC reasons but do not allow to set enable MQ 2011-07-22 11:25:30 +00:00
zend_ini_scanner.c - remove magic quotes support, functions are kept (see the NEWS entry for the details) for BC reasons but do not allow to set enable MQ 2011-07-22 11:25:30 +00:00
zend_ini_scanner.h - Year++ 2011-01-01 02:17:06 +00:00
zend_ini_scanner.l - Year++ 2011-01-01 02:17:06 +00:00
zend_ini.c - Year++ 2011-01-01 02:17:06 +00:00
zend_ini.h - Year++ 2011-01-01 02:17:06 +00:00
zend_interfaces.c - Year++ 2011-01-01 02:17:06 +00:00
zend_interfaces.h - Year++ 2011-01-01 02:17:06 +00:00
zend_istdiostream.h - Year++ 2011-01-01 02:17:06 +00:00
zend_iterators.c - Year++ 2011-01-01 02:17:06 +00:00
zend_iterators.h - Year++ 2011-01-01 02:17:06 +00:00
zend_language_parser.y - Drop T_SCALAR_CAST 2011-08-16 12:13:35 +00:00
zend_language_scanner_defs.h Fix bug #55445 (Incomplete implementation of <?= being independant of short_open_tag) 2011-08-17 23:50:04 +00:00
zend_language_scanner.c Fix bug #55445 (Incomplete implementation of <?= being independant of short_open_tag) 2011-08-17 23:50:04 +00:00
zend_language_scanner.h - Year++ 2011-01-01 02:17:06 +00:00
zend_language_scanner.l Fix bug #55445 (Incomplete implementation of <?= being independant of short_open_tag) 2011-08-17 23:50:04 +00:00
zend_list.c - Year++ 2011-01-01 02:17:06 +00:00
zend_list.h - Year++ 2011-01-01 02:17:06 +00:00
zend_llist.c - Year++ 2011-01-01 02:17:06 +00:00
zend_llist.h - Year++ 2011-01-01 02:17:06 +00:00
zend_modules.h - Added ZEND_MOD_END macro to use in the end of zend_module_dep[] 2011-08-06 14:47:44 +00:00
zend_multibyte.c Fix zend.multibyte oddities. Hope this will address all the known problems. 2011-03-06 07:00:30 +00:00
zend_multibyte.h Fix zend.multibyte oddities. Hope this will address all the known problems. 2011-03-06 07:00:30 +00:00
zend_multiply.h Arithmetic speedup. Inlined most probable code-paths for arithmetic operations directly into executor. 2011-05-23 08:05:44 +00:00
zend_object_handlers.c Fixed bug #54372 (Crash accessing global object itself returned from its __get() handle) 2011-04-07 13:35:27 +00:00
zend_object_handlers.h - Year++ 2011-01-01 02:17:06 +00:00
zend_objects_API.c - Year++ 2011-01-01 02:17:06 +00:00
zend_objects_API.h - Year++ 2011-01-01 02:17:06 +00:00
zend_objects.c - Year++ 2011-01-01 02:17:06 +00:00
zend_objects.h - Year++ 2011-01-01 02:17:06 +00:00
zend_opcode.c - Year++ 2011-01-01 02:17:06 +00:00
zend_operators.c - Fixed ZTS build 2011-08-30 01:33:42 +00:00
zend_operators.h - Zend engine part for bug #55158: Add SORT_NATURAL type to array_multisort 2011-08-29 20:24:09 +00:00
zend_ptr_stack.c - Year++ 2011-01-01 02:17:06 +00:00
zend_ptr_stack.h - Year++ 2011-01-01 02:17:06 +00:00
zend_qsort.c - Year++ 2011-01-01 02:17:06 +00:00
zend_qsort.h - Year++ 2011-01-01 02:17:06 +00:00
zend_signal.c - Fixed wrong sigaction() call passing signal number 65 (invalid) 2011-06-05 01:15:10 +00:00
zend_signal.h Zend Signal Handling (see RFC: https://wiki.php.net/rfc/zendsignals) 2011-06-02 21:16:50 +00:00
zend_sprintf.c - Year++ 2011-01-01 02:17:06 +00:00
zend_stack.c - Year++ 2011-01-01 02:17:06 +00:00
zend_stack.h - Year++ 2011-01-01 02:17:06 +00:00
zend_static_allocator.c - Year++ 2011-01-01 02:17:06 +00:00
zend_static_allocator.h - Year++ 2011-01-01 02:17:06 +00:00
zend_stream.c - Year++ 2011-01-01 02:17:06 +00:00
zend_stream.h - Year++ 2011-01-01 02:17:06 +00:00
zend_string.c Reverted Gopal's patch that allowed plugable interned string check 2011-07-28 12:01:42 +00:00
zend_string.h Reverted Gopal's patch that allowed plugable interned string check 2011-07-28 12:01:42 +00:00
zend_strtod.c Check if given string is long enough in zend_*_strtod 2011-07-27 14:17:45 +00:00
zend_strtod.h - add binary suport, FR #50638, as defined in RFC https://wiki.php.net/rfc/binnotation4ints, patch by Jonah Harris 2011-07-27 00:14:02 +00:00
zend_ts_hash.c - Year++ 2011-01-01 02:17:06 +00:00
zend_ts_hash.h - Year++ 2011-01-01 02:17:06 +00:00
zend_types.h - Year++ 2011-01-01 02:17:06 +00:00
zend_variables.c scalar types cleanup 2011-06-03 01:09:32 +00:00
zend_variables.h - Year++ 2011-01-01 02:17:06 +00:00
zend_vm_def.h Fixed bug #55305 (ref lost: 1st ref instantiated in class def, 2nd ref made w/o instantiating) 2011-08-01 15:23:16 +00:00
zend_vm_execute.h Fixed bug #55305 (ref lost: 1st ref instantiated in class def, 2nd ref made w/o instantiating) 2011-08-01 15:23:16 +00:00
zend_vm_execute.skl - Improved memory usage 2010-09-15 07:38:52 +00:00
zend_vm_gen.php - Year++ 2011-07-10 13:05:32 +00:00
zend_vm_opcodes.h - Year++ 2011-07-10 13:05:32 +00:00
zend_vm.h - Year++ 2011-01-01 02:17:06 +00:00
zend.c Use snprintf and strncat to make the static analyzers happy 2011-08-08 03:08:59 +00:00
Zend.dsp - not used anymore 2010-09-15 16:58:11 +00:00
zend.h Callable typehint following the rules of is_callable($arg, false); 2011-08-16 10:44:47 +00:00
zend.ico
Zend.m4 Zend Signal Handling (see RFC: https://wiki.php.net/rfc/zendsignals) 2011-06-02 21:16:50 +00:00
ZendCore.dep
ZendTS.dsp - not used anymore 2010-09-15 16:58:11 +00:00

ZEND_VM
=======

ZEND_VM architecture allows specializing opcode handlers according to op_type
fields and using different execution methods (call threading, switch threading
and direct threading). As a result ZE2 got more than 20% speedup on raw PHP
code execution (with specialized executor and direct threading execution
method). As in most PHP applications raw execution speed isn't the limiting
factor but system calls and database callls are, your mileage with this patch
will vary.

Most parts of the old zend_execute.c go into zend_vm_def.h. Here you can
find opcode handlers and helpers. The typical opcode handler template looks
like this:

ZEND_VM_HANDLER(<OPCODE-NUMBER>, <OPCODE>, <OP1_TYPES>, <OP2_TYPES>)
{
	<HANDLER'S CODE>
}

<OPCODE-NUMBER> is a opcode number (0, 1, ...)
<OPCODE> is an opcode name (ZEN_NOP, ZEND_ADD, :)
<OP1_TYPES> & <OP2_TYPES> are masks for allowed operand op_types. Specializer
will generate code only for defined combination of types. You can use any 
combination of the following op_types UNUSED, CONST, VAR, TMP and  CV also
you can use ANY mask to disable specialization according operand's op_type.
<HANDLER'S CODE> is a handler's code itself. For most handlers it stills the
same as in old zend_execute.c, but now it uses macros to access opcode operands
and some internal executor data.

You can see the conformity of new macros to old code in the following list:

EXECUTE_DATA
	execute_data
ZEND_VM_DISPATCH_TO_HANDLER(<OP>)
	return <OP>_helper(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU)
ZEND_VM_DISPATCH_TO_HELPER(<NAME>) 
	return <NAME>(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU)
ZEND_VM_DISPATCH_TO_HELPER_EX(<NAME>,<PARAM>,<VAL>) 
	return <NAME>(<VAL>, ZEND_OPCODE_HANDLER_ARGS_PASSTHRU)
ZEND_VM_CONTINUE()
	return 0
ZEND_VM_NEXT_OPCODE()
	NEXT_OPCODE()
ZEND_VM_SET_OPCODE(<TARGET>
	SET_OPCODE(<TARGET>
ZEND_VM_INC_OPCODE()
	INC_OPCOD()
ZEND_VM_RETURN_FROM_EXECUTE_LOOP()
	RETURN_FROM_EXECUTE_LOOP()
ZEND_VM_C_LABEL(<LABEL>):
	<LABEL>:
ZEND_VM_C_GOTO(<LABEL>)
	goto <LABEL>
OP<X>_TYPE
	opline->op<X>.op_type
GET_OP<X>_ZVAL_PTR(<TYPE>)
	get_zval_ptr(&opline->op<X>, EX(Ts), &free_op<X>, <TYPE>)
GET_OP<X>_ZVAL_PTR_PTR(<TYPE>)
	get_zval_ptr_ptr(&opline->op<X>, EX(Ts), &free_op<X>, <TYPE>)
GET_OP<X>_OBJ_ZVAL_PTR(<TYPE>)
	get_obj_zval_ptr(&opline->op<X>, EX(Ts), &free_op<X>, <TYPE>)
GET_OP<X>_OBJ_ZVAL_PTR_PTR(<TYPE>)
	get_obj_zval_ptr_ptr(&opline->op<X>, EX(Ts), &free_op<X>, <TYPE>)
IS_OP<X>_TMP_FREE()
	IS_TMP_FREE(free_op<X>)
FREE_OP<X>()
	FREE_OP(free_op<X>)
FREE_OP<X>_IF_VAR()
	FREE_VAR(free_op<X>)
FREE_OP<X>_VAR_PTR()
	FREE_VAR_PTR(free_op<X>)


Executor's helpers can be defined without parameters or with one parameter. 
This is done with the following constructs:

ZEND_VM_HELPER(<HELPER-NAME>, <OP1_TYPES>, <OP2_TYPES>)
{
	<HELPER'S CODE>
}

ZEND_VM_HELPER_EX(<HELPER-NAME>, <OP1_TYPES>, <OP2_TYPES>, <PARAM_SPEC>)
{
	<HELPER'S CODE>
}

Executor's code is generated by PHP script zend_vm_gen.php it uses zend_vm_def.h
and zend_vm_execute.skl as input and produces zend_vm_opcodes.h and 
zend_vm_execute.h. The first file is a list of opcode definitions. It is 
included from zend_compile.h. The second one is an executor code itself. It is
included from zend_execute.c.

zend_vm_gen.php can produce different kind of executors. You can select 
different opcode threading model using --with-vm-kind=CALL|SWITCH|GOTO. You can 
disable opcode specialization using --without-specializer. You can include or
exclude old executor together with specialized one using --without-old-executor.
At last you can debug executor using original zend_vm_def.h or generated file
zend_vm_execute.h. Debugging with original file requires --with-lines
option. By default ZE2 uses the following command to generate executor:

$ php zend_vm_gen.php --with-vm-kind=CALL

Zend Engine II currently includes two executors during the build process, one
is the specialized version and the other is the old one non-specialized with
function handlers. By default Zend Engine II uses the specialized one but you
can switch to the old executor at runtime by calling zend_vm_use_old_executor().